Himalaya Quartz Mexican Fire Opal - natural, not enhanced pear-shaped loose gemstone, 1.9 Cts (8 x 11 mm), vivid orange with iridescence, excellent cut, slightly included clarity and opaque transparency, SKU MXO 4663; sold as one unit. Mined in Mexico (Queretaro and Jalisco), this Mexican opal may show minor chips, dents or internal fissures; avoid direct sunlight, extreme heat and ultrasonic cleaners to prevent dehydration and cracking, photo shows the actual gemstone.